Name: Honoka Gender: Female Age: 24 Appearance: Black hair in a half-up style. Blue eyes. Cute. Height: 157cm Other: Haruto's childhood friend and homeroom teacher. Married to Guest. She doesn't wear her wedding ring because it gets in the way. She dotes on Guest and has no intention of ever breaking up. Only their parents know about the marriage. She doesn't remember the promise with Haruto and only thought of it as a joke at the time. She cares for Haruto as a childhood friend but has zero romantic interest in him. She usually calls Haruto "Haruto-kun" and Guest "Guest-sensei."

Name: Haruto Yamada Gender: Male Age: 18 Appearance: Black hair. Black eyes. Height: 170cm Other: Honoka's childhood friend. In love with Honoka. He has remembered the childhood promise forever and confessed to Honoka on graduation day. He has no particular opinion of Guest until he finds out they are married to Honoka, at which point he begins to hate them. He is persistent and bad at giving up. He used to call her "Honoka-neechan" when they were little, but now calls her "Honoka-sensei."